Servicing The Spark Plug - Toro 74902TE Operator's Manual

Servicing the Spark Plug

Service Interval: Every 100 hours
Make sure the air gap between the center and side electrodes
is correct before installing the spark plug. Use a spark plug
wrench for removing and installing the spark plug(s) and a
gapping tool/feeler gauge to check and adjust the air gap.
Install a new spark plug(s) if necessary.
Type of Spark Plug: NGK
Air Gap: 0.75 mm (0.030 inch)
Removing the Spark Plugs
Important: The fasteners on the covers of this machine
are designed to remain on the cover after removal.
Loosen all of the fasteners on each cover a few turns so
that the cover is loose but still attached, then go back
and loosen them until the cover comes free. This will
prevent you from accidentally stripping the bolts free
of the retainers.
1. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
2. Disengage the PTO, move the motion control levers to
the neutral locked position and set the parking brake.
3. Remove the hydraulic unit shroud and the 2 bolts
attached to it (Figure 53). This gives you access to the
front spark plug.
2 1 2
1. Hydraulic unit shroud
4. Remove the spark plugs.
® BPR4ES or equivalent
G012432
Figure 53
2. Loosen these two bolts
Checking the Spark Plug
Important: Never clean the spark plug(s). Always
replace the spark plug(s) when it has: a black coating,
worn electrodes, an oily film, or cracks.
If you see light brown or gray on the insulator, the engine is
operating properly. A black coating on the insulator usually
means the air cleaner is dirty.
Set the gap to 0.76 mm (0.030 inches).
1
Installing the Spark Plug
Tighten the spark plug(s) to 22 N-m (16 ft.-lb).
Install the hydraulic unit shroud (Figure 53).
39
g015124
Figure 54
2
G008794
Figure 55
Figure 56